diff --git a/platformapi/weixinapi/sns.go b/platformapi/weixinapi/sns.go
index 02c45687..fe602a8d 100644
--- a/platformapi/weixinapi/sns.go
+++ b/platformapi/weixinapi/sns.go
@@ -62,8 +62,7 @@ func mapData2SNSToken(result map[string]interface{}) *SNSTokenInfo {
 }
 
 func (a *API) SNSRetrieveToken(code string) (tokenInfo *SNSTokenInfo, err error) {
-	//"grant_type", "authorization_code",
-	result, err := a.AccessAPI("sns/oauth2/access_token", utils.Params2Map("code", code), "")
+	result, err := a.AccessAPI("sns/oauth2/access_token", utils.Params2Map("grant_type", "authorization_code", "code", code), "")
 	if err != nil {
 		return nil, err
 	}